UCAS2023年英本申請重要時間節點！
英美作為藝術留學的主流國，一直是國內藝術留學家庭青睞的首選國家。英國本科的UCAS網申系統本月6日已正式開放！原則上，所有英國大學的所有本科學位課程，包括專升本，都要通過UCAS申請。 2023UCAS申請時間線 20...
2022美國規模最大的女生數學賽事Math Prize for Girls 10月將在MIT舉行！
美國規模最大的女生數學賽事， Math Prize for Girls 將于10月在MIT舉辦！ 或許你對它有些陌生， 不過它和大家所熟悉的AMC有著不可分割的關系！ 一起來了解一下吧！ Math Prize for Girls 該賽事活動接受美國及加...
NEC 2023報名正式啟動，10月15日前可享早鳥優惠！NEC組隊等你來
NEC全美經濟學挑戰報名啟動?? 截止日期：11月30日?? 10月15日前可享受早鳥價優惠 報名費立減100元！ 全球歷史最悠久的經濟學活動 讓全世界看到中國青年學子的能力 通往國際的舞臺已為你打開大門 歡迎加入2023 NEC...
哈佛大學2022推薦書單，10本電子書免費領！
開學季來臨！大家是不是“書荒”了呢？ 哈佛大學發布2022暑期書單 各學院教授每年都會推薦一些經典讀物 相信每位同學都能 在這個列表中找到喜歡的那本書！ www.harvard.edu/in-focus/summer-reads/book-recommendat...
Edexcel A Level Chemistry:復習筆記3.6.2 Infrared (IR) Spectroscopy
Interpreting an IR Spectrum Infrared (IR) spectroscopy?is a technique used to identify compounds based on changes in?vibrations?of atoms when they?absorb?IR of certain?frequencies A?spectrop...
Edexcel A Level Chemistry:復習筆記3.6.1 Mass Spectrometry
Mass Spectrometry Mass spectroscopy?is an analytical technique used to identify unknown compounds The molecules in the small sample are?bombarded?with high energy electrons which can cause t...
Edexcel A Level Chemistry:復習筆記3.5.3 Organic Liquid Preparation & Purification
Organic Liquid Preparation & Purification Simple Distillation This is used to separate a liquid and?soluble solid?from a solution (e.g. water from a solution of salt water) or a pure liq...
Edexcel A Level Chemistry:復習筆記3.5.2 Reactions of Alcohols
Reactions of Alcohols Combustion of alcohols Alcohols react with oxygen in the air when ignited and undergo?complete combustion?to form carbon dioxide and water alcohol + oxygen → carbon dio...
Edexcel A Level Chemistry:復習筆記3.5.1 Classifying Alcohols
Classifying Alcohols Alcohols?are a family of molecules that contain the?hydroxyl functional group,?-OH Their general formula is ?CnH2n+1OH The nomenclature of alcohols follows the pattern?a...
Edexcel A Level Chemistry:復習筆記3.4.5 Reactivity of Halogenoalkanes
Reactivity of Halogenoalkanes Nucleophilic substitution reactions can occur in two different ways (known as?SN2?and?SN1?reactions) depending on the structure of the halogenoalkane involved T...
Edexcel A Level Chemistry:復習筆記3.4.4 Hydrolysis of Halogenoalkanes
Relative Rates of Hydrolysis Measuring the rate of hydrolysis Acidified aqueous silver nitrate can be used to measure the rate of hydrolysis of halogenoalkanes The following method is used: ...
Edexcel A Level Chemistry:復習筆記3.4.3 Nucleophilic Substitution Mechanism
Nucleophilic Substitution: Mechanisms A?nucleophilic substitution?reaction is one in which a?nucleophile?attacks a carbon atom which carries a?partial?positive?charge An atom that has a?part...
